Let me try this again...last night I spent 45 min. typing a response to the various comments, and when I finally hit the POST button...$#@*! Server Not Found! Locked up!
Capt. Jas., I have thought about your statement about someone
NEEDING a high comb and am not sure what that actually means. I think it goes back to the gun that was too short and didn't fit you, so you built up the comb and added a butt extension or something. Now that doesn't mean a person needs a hi comb on all guns, just that one. If a particular gun has too little drop at the heel he might need a shorter comb, and I have seen some that were actually cut down drastically for that shooter. That is what happens when you buy a factory built or a lot of the pre-carved kit stocks that are rather generic. It may "kinda" fit 6 outta 10 guys if lucky, but 4 are gonna be very disapointed.
Now all the variable dimensions you mention in your design consideration sound very thoughtful and you could probably build the perfect rifle if you could accomplish all of those factors in one rifle or smoothie. Sounds like it will look like a Schutzen or Olympic rifle. Or you may need a perchbelly or stepped wrist to accomplish it, spoiling the true architecture. I'm just trying to build a longrifle with the classic lines of the originals....that fits the new owner or me. NOT saying all these dimensions are bad, but not all that neccesary on a traditional longrifle. This t-s, while far from perfect will get you....not just in the ball park but right on the pitchers mound! Sometimes simpler is better. I have used this to build guns for a variety of guys from 5'-2" to 6'-8"(my son) from fat to skinny, and all have been happy with the fit.
Now I can envision how to make the comb adjustable, but so far it hasn't been an issue. I know some guys will obcess over these thing and that's fine if you want to.
This just gives you a chance to try different drop/pull combination until you find one that is comfortable. If you plan to use your gun for hunting in the winter, you will want to try it with a heavy coat & sweaters on so you don't end up with a pull too long to reach. Makes a big difference.
I will probably build another someday with a Roman nose profile just to see what happens. I have built a couple Bedfords and a Haga/Reading style with it and they fit fine too.
I would like to know if there is a mathematical formula so I don't need this apperatus. I have heard wispered hints of such, but so far it must be guarded by the Free Masons or Knights Templar.
I'll bet JerrywH knows!